Need clarifications for GetGroup

[pdumais]

GetGroup would return the list of users assigned to the requested group and all its children.
So if I have:
rootGroup
subbroup1
subgroup1a
And I have 1 user per groups (user1, user2, user3 respectivily)

If I GetGroup(rootGroup), I should get the the list of all 3 users
This brings up 2 questions

• Why does the orgId need to be in the response, since those users are part of a group in the same org anyway?
• We get the list of users and their role, but no information about to which child this role is for. Is this an oversight?

Also, what happens, for example, if user1 is Requester in subgroup1, and Assigner in subgroup1a, and I GetGroup(rootGroup) ? Am I gonna see user1 2 times in the list?